forked from mirrors/gecko-dev
60 lines
1.5 KiB
C++
60 lines
1.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GPU_BUFFER_H_
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#define GPU_BUFFER_H_
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#include "js/RootingAPI.h"
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#include "mozilla/dom/Nullable.h"
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#include "mozilla/webgpu/WebGPUTypes.h"
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#include "ObjectModel.h"
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namespace mozilla {
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namespace ipc {
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class Shmem;
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} // namespace ipc
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namespace webgpu {
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class Device;
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class Buffer final : public ObjectBase, public ChildOf<Device> {
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public:
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GPU_DECL_CYCLE_COLLECTION(Buffer)
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GPU_DECL_JS_WRAP(Buffer)
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struct Mapping final {
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UniquePtr<ipc::Shmem> mShmem;
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JS::Heap<JSObject*> mArrayBuffer;
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const bool mWrite;
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Mapping(ipc::Shmem&& aShmem, JSObject* aArrayBuffer, bool aWrite);
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};
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Buffer(Device* const aParent, RawId aId, BufferAddress aSize);
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void InitMapping(ipc::Shmem&& aShmem, JSObject* aArrayBuffer, bool aWrite);
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const RawId mId;
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private:
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virtual ~Buffer();
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void Cleanup();
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// Note: we can't map a buffer with the size that don't fit into `size_t`
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// (which may be smaller than `BufferAddress`), but general not all buffers
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// are mapped.
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const BufferAddress mSize;
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nsString mLabel;
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Maybe<Mapping> mMapping;
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public:
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already_AddRefed<dom::Promise> MapReadAsync(ErrorResult& aRv);
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void Unmap(JSContext* aCx, ErrorResult& aRv);
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void Destroy();
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};
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} // namespace webgpu
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} // namespace mozilla
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#endif // GPU_BUFFER_H_
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